I'm working on my first EGR valve problem. I know they get dirty and can be cleaned, so I'm gonna give it a whirl.
I have a vacuum solenoid with markings of R, P, & Q, and another port with no marks that goes to the EGR itself.
The EGR (mounted on a 5S-FE, Toyota Camry) is difficult to access the mounting bolts, so I looked first at the vacuum solenoid. Sadly, I'm not sure what I'm looking at and could use some help.
I think I need a vacuum pump to proceed, but I'm not sure what I'm looking at.